Tuesday 27th June 2023 PP 173 Visits ,


Polypropylene (PP) has characteristics that are extremely similar to those of the HDPE that sometimes it is difficult to distinguish between the two. PP is often divided into the homo-PP and the co-PP. Although the PP density is extremely small (between 0.9 and 0.94), it is mechanically much stronger and harder than the HDPE, and has better electro-insulating properties. It is also highly chemical-resistant.


  • Low specific gravity (0.9 or lower), transparent, 95% crystalline
  • Often used as a hard molding material
  • Although it is shock-absorbent in room temperature, because it loses its strength against shock in temperatures below -5 degrees Celsius, it requires a grade that is highly shock-absorbent.
  • Heat-resistant, wear-resistant
  • Waterproof, chemical-resistant
  • Smells like gasoline and loses stickiness and printability when combusted.
  • Ages slowly under the sunlight and heat
  • More affordable and light-weight than the HDPE
  • Extremely light, insulates well, and easily workable using machines
  • Can be welded or fused.


  • Plating, chemical tank lining, gears, poller guides
  • Various ducts and storage tanks
  • Electrolytic cell
  • Structures and lining of fish breeding grounds
  • Footholds and cutting boards